what is the lowest version of OSX that LCL application should work with?

I got feedback that my program works with OS X 10.7.2 but fails with OS
X 10.5.8.
I got some info, but as I'm not very familiar with OSX development, I
don't know if this is useful:
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Exception Type: EXC_BREAKPOINT (SIGTRAP)
Exception Codes: 0x0000000000000002, 0x0000000000000000
Crashed Thread: 0

Dyld Error Message:
unknown required load command 0x80000022
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I saw that there was simmilar problem reported in mailing list (
http://comments.gmane.org/gmane.comp.ide.lazarus.general/50138 ) and it
says the program used TTrayIcon. Mine program also uses TTrayIcon - was
this behaviour fixed or investigated?
Maybe I can I catch this type of exception or somehow work around it?

> I saw that there was simmilar problem reported in mailing list (
> http://comments.gmane.org/gmane.comp.ide.lazarus.general/50138 ) and it
> says the program used TTrayIcon. Mine program also uses TTrayIcon - was
> this behaviour fixed or investigated?
> Maybe I can I catch this type of exception or somehow work around it?